Check South Carolina's Department of Labor, Licensing and Regulation (LLR) to be sure your contractor is licensed to do work here in SC.
South Carolina Flood Resources
Read This First: Columbia Flood Restoration Help
See if your contractor has Institute of Inspection Cleaning and Restoration Certification (IICRC).
Read ratings and reviews of your contractor on the Better Business Bureau (BBB) website.
Read Recommendations and Procedures for Cleaning Out a House or Business Following a Flood from the Southwest Georgia Chapter of the American Institute of Architects.